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Finding the Fourth Proportional to 141,295.68, 194,987.88 and 77,633.32

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Solution

The fourth proportional to 141,295.68, 194,987.88 and 77,633.32 is: 107,133.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,295.68 : 194,987.88 = 77,633.32 : x
  2. Step 2: Convert to fraction form
    141,295.68/194,987.88 = 77,633.32/x
  3. Step 3: Cross multiply
    141,295.68x = 194,987.88 × 77,633.32
  4. Step 4: Simplify right side
    141,295.68x = 15,137,556,484.16
  5. Step 5: Solve for x
    x = 15,137,556,484.16/141,295.68
  6. Step 6: Final answer
    x = 107,133.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.